A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 6145-01-141-6809
NSN 5905-01-341-5595
NSN 5835-01-580-0446
NSN 6150-01-626-1691
NSN 2925-01-528-7333
NSN 2925-01-320-0965
NSN 6110-00-288-4179
NSN 6110-01-542-9860
NSN 6645-00-841-0026
NSN 6320-01-334-9840
NSN 5920-01-032-4756
NSN 5965-00-630-7872